The Bolt,machine, cataloged under National Stock Number 5306-00-276-8158, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-276-8158 |
| Item Name | Bolt,machine |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.964 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN |
| Fastener Length | 7.000 INCHES NOMINAL IN |
| Thread Length | 2.875 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.328 INCHES NOMINAL FIRST HOLE IN |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Features Provided | UNFINISHED HEAD |
| Head Style | SQUARE |
| Thread Direction | RIGHT-HAND |
| Grip Length | 4.125 INCHES NOMINAL IN |
| Width Between Flats | 2.175 INCHES MINIMUM AND 2.250 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 6 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.500 INCHES NOMINAL FIRST HOLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| D4784 | 5/9 Secondary reference Koehring Co Lorain Div |
| D4784 | 3/9 Design control — primary reference Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co |
| T1527 | 5/9 Secondary reference Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co |
| T1527 | 5/9 Secondary reference Koehring Co Lorain Div |
NSN 5306-00-276-8158 is a Bolt,machine, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-00-276-8158: Head Height: 0.964 INCHES MINIMUM AND 1.036 INCHES MAXIMUM IN; Fastener Length: 7.000 INCHES NOMINAL IN; Thread Length: 2.875 INCHES MAXIMUM IN; Shank Unthreaded Hole Diameter: 0.328 INCHES NOMINAL FIRST HOLE IN. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.